About this replacement
Dell G5 5590 / G7 7590 Series — 15.2V Li-Polymer Replacement Battery (06YV0V)
This is a 15.2V, 3700mAh (56.24Wh) lithium-polymer battery for the Dell G5 15 and G7 15 gaming notebooks. It fits the G5 5590-D2785W, G7 7590-D2785B, Alienware ALW15M-D1523S, ALW15M-R2758R, and 71 additional models sharing the same battery bay and connector. OEM part numbers covered include 06YV0V, 0JJPFK, 1F22N, and XRGXX.
- G5 / G7 and Alienware M-series compatibility: These models share a common 15.2V four-cell Li-Polymer architecture, the same physical connector, and the same BMS handshake protocol. The battery pack communicates health and cycle data over the SMBus line — same pinout across all listed variants.
- Bench tested on actual hardware: We seated this cell in a G5 5590 chassis and confirmed the BMS initialised correctly, the BIOS recognised the pack, and the charge controller cycled through CC/CV phases to full without fault codes. SMBus communication stayed stable under sustained GPU and CPU load.
- Post-swap BIOS learn cycle: After fitting this battery, run the laptop on battery until it hibernates at cutoff, then charge uninterrupted to 100%. This forces the BIOS to reset its learned capacity table against the new cell and clears the inaccurate health warning that appears after every cell swap on Dell gaming notebooks.
BIOS reporting battery health as poor immediately after replacement
Dell's EC firmware stores cycle count and wear data in the outgoing cell's EEPROM. When a new cell arrives, that stored data is gone — the BIOS reads a blank or mismatched register and flags the battery as degraded or unknown. This is a firmware artefact, not a fault with the replacement cell. Running one full discharge-to-hibernate followed by an uninterrupted full charge lets the fuel gauge IC calibrate against the new chemistry. After one or two complete cycles, the health status clears and the reported capacity aligns with the actual 56.24Wh rating.
Laptop shuts down at 20–30% shown while gaming
Under full CPU plus discrete GPU load on the G5 and G7, current draw can spike sharply — the cell voltage drops faster than the fuel gauge can track at that discharge rate. When cell voltage hits the BMS cutoff threshold (around 12.0V under load), the system shuts down even though the OS still shows charge remaining. This is a voltage cliff caused by high instantaneous current demand outpacing the fuel gauge's state-of-charge model. Let the laptop cool for five minutes, then reboot on battery — if it resumes and shows charge, the fuel gauge IC simply needs another full calibration cycle starting from 100%.